In her "Prayer Journal," Flannery O'Connor says of sin, "You can never finish eating it nor ever digest it. It has to be vomited," but, she immediately concludes, "perhaps that is too literary a statement; this mustn't get insincere."

(CNN) - On my Christmas list of gifts to buy my evangelical friends, there's a little book of prayers.

This is less predictable than it may seem, since the prayers aren't from a celebrity evangelical preacher, but from a morbid, quirky Catholic who spent her short life with pet peacocks and wooden-leg-stealing Bible salesman stories.

But I think Flannery O'Connor's newly published "Prayer Journal" is exactly what Christians need, maybe especially at Christmas.

(CNN) - He looked like a “red-faced pork butcher in shabby tweeds,” lived secretly with a woman for years and was so turned on by S&M that he once asked people at a party whether he could spank them.

We’re talking, of course, about C.S. Lewis, the Christian icon and author of classics such as “Mere Christianity” and “The Chronicles of Narnia.”

It’s tempting to remember Lewis only as the self-assured defender of Christianity who never met an argument he couldn't demolish. His death 50 years ago, on November 22, 1963, was overshadowed by the assassination of President John F. Kennedy. He has since become a patron saint of American evangelicals.

But the actual man whom friends called “Jack” had a “horrible” personal life, thought he had failed as a defender of Christianity and spent so much time in pubs that his publishers initially struggled selling him to a religious audience, scholars say.

Eben Alexander shouted and flailed as hospital orderlies tried to hold him in place. But no one could stop his violent seizures, and the 54-year-old neurosurgeon went limp as his horrified wife looked on.

That moment could have been the end. But Alexander says it was just the beginning. He found himself soaring toward a brilliant white light tinged with gold into “the strangest, most beautiful world I’d ever seen.”

Alexander calls that world heaven, and he describes his journey in “Proof of Heaven,” which has been on The New York Times bestseller list for 27 weeks. Alexander says he used to be an indifferent churchgoer who ignored stories about the afterlife. But now he knows there’s truth to those stories, and there’s no reason to fear death.

“Not one bit,” he said. “It’s a transition; it’s not the end of anything. We will be with our loved ones again.”

Heaven used to be a mystery, a place glimpsed only by mystics and prophets. But popular culture is filled with firsthand accounts from all sorts of people who claim that they, too, have proofs of heaven after undergoing near-death experiences.

Yet the popularity of these stories raises another question: Why doesn’t the church talk about heaven anymore? FULL POST

(CNN) - An angry outburst at a mosque. The posting of a suspicious YouTube video. A friendship with a shadowy imam.

Those were just some of the signs that Tamerlan Tsarnaev, accused of masterminding the Boston Marathon bombings, had adopted a virulent strain of Islam that led to the deaths of four people and injury of more than 260.

But how else can you tell that someone’s religious beliefshave crossed the line? The answer may not be as simple you think, according to scholars who study all brands of religious extremism. The line between good and evil religion is thin, they say, and it’s easy to make self-righteous assumptions.

“When it’s something we like, we say it’s commitment to an idea; when it’s something we don’t like, we say it’s blind obedience,” said Douglas Jacobsen, a theology professor at Messiah College in Pennsylvania.

That line, taken from the country music song “Lead Me Not,” evokes smiles because it underscores a truth: The struggle against temptation is universal.

A new survey, however, gets specific about the type of temptations most Americans battle against, and shows that men and women seem to wrestle with different vices.

“Temptations and America’s Favorite Sins,” a survey conducted by the Barna Group, a Christian research firm, concludes that the moral struggles that vex most Americans aren’t the salacious acts that drive the plotlines of reality television shows. Most Americans are too worn down or distracted to get snared by those vices, the survey concludes.

The top three sins seducing most Americans: procrastination, overeating and spending too much time on media.

Atlanta (CNN) - As the 49ers and Ravens take the field in New Orleans’ Super Dome for Super Bowl XLVII, a man very familiar with that field, Chris Reis, will be watching the game with his family.

It was only three years ago that Reis was playing in the big game for the New Orleans Saints. He burst into the national spotlight with one unusual, but game-changing play, an onside kick recovery that surprised the opposition and many say paved the path for the Saints’ 31-17 victory over the Indianapolis Colts.

It was an unlikely position for a kid who grew up in a broken family, with a father who was in and out of his life and addicted to sex and alcohol. Reis broke through the obstacles to succeed, he says, in part by finding God in high school. He went on to play for Georgia Tech where he served as president of the school’s Fellowship of Christian Athletes. He was briefly signed as a free agent by the Atlanta Falcons, but the team cut him loose before he even saw field time. The Saints then signed him as a free agent, but sent him to play in the NFL Europe league. Later that year the team called him back to New Orleans where he played the next four years with the Saints.

(CNN) - To Scientologists and their supporters, L. Ron Hubbard is a voice of wisdom and the church is the way to enlightenment. To antagonists and skeptics, Hubbard is a con artist and fraud, and the church is a mishmash of Freudian psychology and science fiction, a celebrity-laden scam.

Lawrence Wright doesn’t buy either generalization.

In his new book, “Going Clear: Scientology, Hollywood and the Prison of Belief,” the Pulitzer Prize-winning author of “The Looming Tower” delves into the life of Hubbard, the writer-turned-prophet, and the church he created – one which, he says, arose out of an atmosphere of spiritual ferment in post-World War II Los Angeles. Hubbard, he says, was “a very interesting man and a man who had certain disturbing influences in his personality” – but not a con man: “If he really was just in it for money, somewhere along the line he would have taken his money and gone to Monte Carlo. He never did that.” FULL POST

CNN–It’s about to get crowded in your hotel room nightstand. The newest addition could soon be a sacred Hindu text called the Bhagavad-Gita.

The Bhagavad-Gita is literally translated as “song of God” and is a discussion between Lord Krishna and his student, Arjuna, on revealing one’s spiritual identity and a relationship with God, says Vaisesika Dasa, founder and president of the Motel Gita project, the group behind the effort.

Motel Gita, with the help of a Hindu nonprofit, has distributed approximately 150,000 copies of the Bhagavad-Gita to 1,100 hotels and motels. Dasa said their goal is to place at least 1 million books to, “provide solace to traveling souls by giving them spiritual knowledge.”

The CNN Belief Blog covers the faith angles of the day's biggest stories, from breaking news to politics to entertainment, fostering a global conversation about the role of religion and belief in readers' lives. It's edited by CNN's Daniel Burke with contributions from Eric Marrapodi and CNN's worldwide news gathering team.